I know there is that other thread, but my trip is 10 days away and as I was checking out CET sites I landed at Paris...which they said their pool is opened to hotel guests only. Does not even list a price. I use to love this pool I know before you could go to any CET pool even though they never listed it on their sites... Im just wondering if anyone can confirm as of recent if you tried to enter another CET pool. Are they now checking? Will an old key work??